Die stock and tap wrench



April 4, 1939. H. .1. sMlTH DIE STOCK AND TAP WRENCH Filed Dec. 3,1957

M ATTORNEY.

Patented Apr. 4, 1939 UNITED STATES DIE STOCK AND TAP WRENCH Herbert J. Smith, Greenfield, Mass. Application December 3, 1937, Serial No. 177,956

(Cl. lil-123) 10 Claims.

This invention relates to improvements in die stocks and tap wrenches, and is directed particularly to a combined holder for removably securing and supporting a die and tap, preferably,

but not necessarily, complementary to each other.

An object of this invention is to provide, in a single stock or holder, means for removably securing and supporting a die and tap, whereby either the die or tap may be used without either interfering with the operation of the other.

Another object of this invention is to provide a simple, efficient, combined die stock and tap wrench which is extremely economical of manufacture, and thereby available to the public at l5 an attractive price.

A further object of this invention is to provide, in a combined die stock and tap wrench of the character described, means for removably securing a die and tap in operative positions, and

cooperating means for locking the die in operating position and for securing the tap against rotation in the holder.

These, and other objects and advantages of this invention will be more completely disclosed and described in the following specication, the accompanying drawing, and the appended claims.

`Broadly, this invention comprises a die stock provided with the usual oppositely disposed handle portions and formed with a socket for removably securing and supporting a die therein, a spring sleeve or quill secured in the die stock and provided with a square socket for receiving the square shank of a tap, a locking screw for securing the die in the socket and for securing the die and quill against rotation, the die stock being provided with means for centering and supporting the die stock on the dead center of a lathe or similar mechanism with the axis of the quill on the axis of the dead center.

10 A preferred form of this invention is illustrated in the accompanying drawing, in which:

Fig. 1 is a side elevational view of the assembled die stock and tap wrench, with die and tap in place therein.

Fig. 2 is an enlarged view, similar to Fig. 1, partially in section, illustrating the securing means for the die and quill.

Fig. 3 is a sectional view taken on the line 3-3 ofFig. 2.

Fig. 4 is a sectional view taken on the line 4--4 of Fig. 2, and

Fig. 5 is a view similar to Fig. 1, partially in section, illustrating a modified form of holder for use with adjustable dies.

Referring now to the drawing in detail, in

with the axis of the quill 8, so that, with work PATENT OFFICE which like numerals refer to like parts throughout:

A die stock I is formed with a body portion 2 and oppositely disposed handle portions 3. 'I'he body portion 2 is formed with a shouldered socketV 5 4 for receiving a die 5, and a boss 6 which is provided With a bore 1 for receiving a quill or sleeve B, the axis of the bore 1 being perpendicular to the axis of the die-receiving socket 4.

The quill or sleeve 8 is provided with a bore 9 l0 for receiving the round shank I0 of a tap II, the bore 9 terminating in a square socket I2 for receiving the square end I3 of the shank portion I0. The portion of the quill 8, having the bore 9, is provided with one or more slots I4 l5 to provide a spring grip on the shank I0. The quill 8 is preferably pressed into the body portion 2 of the die stock I, and is preferably considered a permanent partof the die stock I, although it may be removed if desired, for repair, 20 replacement,or other purposes.

With the quill 8 in place, the boss 6 is drilled and tapped to receive a setscrew I5 in such a manner as to penetrate the wall of the quill 8, as best shown in Figs. 2 and 4, so that engage- 25 ment of the screw I5 in the wall of the quill 8 will securely lock the quill 8 in place and prevent its rotation. The screw I5 is preferably provided with a cone point I6 which engages a cornplementary countersink I'I in the side of the die 30 5 to secure the die 5 in the socket 4 and prevent rotation of the die 5 relative to the holder I.

The body portion 2 of the stock I is formed with a boss I8 opposite the boss 6, and the boss I8 is provided with an opening I9 for receiving the 35 dead center point of a lathe or similar mechanism. The axis of the opening I9 is identical held in a chuck or face plate of a lathe, the die stock may be securely held and guided by the dead or tail center of the lathe with the axis oi the tap II in true registration and alignment with the axis of the hole in the work to be tapped.

In the modified form of stock illustrated in Fig. 5, additional screwsZII, located on either side of the screw I5, provide means for adjusting the split die 5 in the socket 4.

The tap II is securely gripped in the spring quill 8, and engagement of the square shank I3 in the square opening I2 prevents rotation of the tap I I relative to the quill 8 and stock. However, the tap II may be removed from and inserted in the quill 8 without disturbing the locking screw llf l5, which engages the quill 8 but does not engage the tap I0.

It Will thus be understood that I have provided a combined die stock and tap Wrench in which a die and tap, preferably complementary to each other, may be removably secured in operative position, and locked in such position against movement relative to the holder by a single locking element.

Whereas, I have disclosed and desoribed a preferred formA of this invention, itvvill be understood by those skilled in the art that minor changes in the proportions, shape, and construction of this device may be made without departing from the scope of the invention, and therefore, I do not limit myself to the exact form disolosed.

What I claim is: Y

l. In a die and tap holder., a body portion prof vided with a socket for receiving a die,A a spring sleeve in said body portion for receiving a tap and having an axis angularly disposed tol the axis of said socket, and a single lockingelement for locking a die in said socket and for looking said sleeve against rotation relative to said body lddiiidii-A l 2. A die and tap holder comprising a substantially circular body portion having flat, parallel ,Side'faces and provided with oppositely disposed handle portions and a central shouldered socket for receiving a die, the axis of said socket being perpendicular to said side faces, said body poriidli being gli@ formed Willi d llore lid-ving d id'digl axis and communicating between the perimeter ofv said body portion and said socket, a spr-ing qriill secured in said bore for receiving a tap, and a locking element in said body portion eI 1-. giggling Said diiill ddd d die i.n said Sddkei idr legging Said ddill diid Said dig ggdiiisi ididiidrl relative to said body portion.

A, die grid tgvv holder einiiilislilg d. Silldslgntially circular body 'portion provided with oppositely disposed handle Yportions and a central bore idrgdeiviiig 'd die, d, boss dii lll@ iigiiiiigii di Said ldddr Poitier provided with d' igdidl lidia g diiill Saldi-dd iii s gld'rgdigl bdig fdr igdgiviiig d tap, and a setsorevv radially disposed in said body ldiiidii dnd ddgggliig Said dliill. ggd g die in. Said Central boi'e-:r-for'lockinug said quill andvsaid die said holder.

i A' dlg grid idp. lddldgi ddiiipiisldg g Siildsigiiiidllr @iidilgi 'body iidriidil pidvldgd Wiil-i dpiidf Siieli/ disridied lidddlg editions ged d Cgi-iiial bei@ forY reeeiving a die, a boss on the perirrieter of Sgld. bedr Ddliidd p-idvidgd W-iili. d igdigl'bde, d dllill slidllrgd iii Sdld igdigl here for igdgiriilg d ildp, ddd .d Sdiididw lgdldllv disiidsgd iii Sgldliddr portion and engaging said quill and a die in said Clediidl bdigffdi lddliiiig' Sgid ddill and .Said die iii said holder, Sdid bddr'pdiiidil lli-ging glio pridvidgd with d. iddidl s d-dlidi Opposite S'gid igldigl lddig .dnd dii dig Sgiilg didi iliigiriill .foi receivlag degli denier pdiili. di d lgillg ldil siedi di diiiiildi iilgdlidiliiiilfdi guiding tgp; getuigd iii said quin.

,5,y A tap Wrench comprising a substantially circular body portion provided With oppositely disposed handles and an axial bore,v said body portion being also formed With a radial bor having an axis substantially perpendicular to the axis of said handles, a quill for receiving a tap removably secured in said radial bore, a locking element radially disposed in said body portion and engaging said quill for locking said quill in said body portion.

6. A tap wrench comprising a substantially circular body portion provided with oppositely disposed handles and an axial bore, said body portion being also formed with a radial bore having an axis substantially perpendicular to the gills di Said, handles g ddill for receiving d idp rerrovably secured in said radial bore, a locking element radially disposed in said body portion and engaging said quill for locking said quill in said body portion, said body portion being provided vvitlh a radial socket opposite said radial bore and on the same axis therewith for receiving a guiding element for a tap secured in Said dell:

"7. AV tap wrench comprising a substantially circular body portion provided with oppositely disposed handles and an axial bore, said body portion being formed with a radial bore, a spring quili for. receiving a tap secured in saidv radial bore and extending outwardly therefrom, said quill being provided With a cylindrical opening for receiving the shank of a tap and a square opening communicating with said cylindrical opening for receiving the square end of a tap shank, a locking element radially disposed in said body portionV and engaging said quill.

8. A tap Wrench 'comprising a substantially oircular body portion provided With an axial bore and a radial bore, a quill secured in said radial bore and projecting therefrom, the projecting portion of said quill being slotted to give a spring eiet, said quill being formed with a circular opening for receiving the circular shank of `a tap and a square opening communicating with said circular/opening for receiving the square @iid df d tgp. ilidiilil'd lddlsiilg glement radially disposed id Sdld body pdiiidii dnd engaging Said quillV and projecting into said axial bore,` said body portion being formed with a radial socket OPRS@ Sfld, radial bQleand 0n the Same axis therewith fior receiving a guiding element for a i ian iii Said ddllll 9.. In a combined die stock and tap Wrench, a substantially circular body portion, provided with an axial opening, a spring quill secured in said body portion and having a radial axis, said body portion being formed with a radial SQQke- Opposite dal@ Spring quill and 0n the $3111@ axis forreoeiving a guiding element for a tap` Seddrdd in Said dllllllo. a combined die stock and tap Wrench comprising a substantially circular body portion profvided uwith a centralY socket for receiving'a'die gli@ a 1f @dial 19911@ Communicating With Said Cen' tral socket, a sleeve secured in said radial bore and provided with an axial opening for receiving d ida said bedr- Pdrlidii being ridvidgd with a radialf'socket opposite said radial bore and the saine axis therewith, a plurality of setscrews radially disposed in said body portion for adjustably securing an adjustable die in said oenti-gl ,Swedish dile di Sgld Screws eilgdgiiig Said sleeve for locking said sleeve against Arotation in Said ldddy. ridiiidii Hgggggi J- Sima.. 

